We work in remote areas plus when traveling there can be little or no radio signal,  I have a Nokia N85 which has a built in FM transmitter we find this  ideal as no need to run wires etc as you need to use an external one i am looking to upgrade phone this year.
got really excited with specs of Nokia N9 but unsure if its going to be made or not.
I see the Nokia N8 has one  but was wondering if any other makes of phones have them, My Ideal phone would be touch screen with qwerty keyboard
I have tried Google but cannot seem to be able to get a list of phones with transmitter built in, only seem to get likes of belkin or griffin etc. 
thanks Peter.